典型文献
Effect of warpage on the electronic structure and optical properties of bilayer germanene
文献摘要：
The electronic structure and optical properties of bilayer germanene under different warpages are studied by the first-principles method of density functional theory.The effects of warpages on the electronic structure and optical properties of bilayer germanene are analyzed.The results of the electronic structure study show that the bottom of the conduction band of bilayer germanene moves to the lower energy direction with the increase of warpages at the K point,and the top of the valence band stays constant at the K point,and so the band gap decreases with the increase of warpage.When the warpage is 0.075 nm,the top of the valence band of bilayer germanene changes from K point to G point,and the bilayer germanene be-comes an indirect band gap semiconductor.This is an effective means to modulate the conversion of bilayer germanene between direct band gap semiconductor and indirect band gap semiconductor by adjusting the band structure of bilayer ger-manene effectively.The study of optical properties shows that the effect of warpage on the optical properties of bilayer ger-manene is mainly distributed in the ultraviolet and visible regions,and the warpage can effectively regulate the electronic struc-ture and optical properties of bilayer germanene.When the warpage is 0.069 nm,the first peak of dielectric function and extinc-tion coefficient is the largest,and the energy corresponding to the absorption band edge is the smallest.Therefore,the elec-tron utilization rate is the best when the warpage is 0.069 nm.
文献关键词：
中图分类号：
作者姓名：
Qihang Xiong;Weifu Cen;Xingtong Wu;Cong Chen
作者机构：
College of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China;College of Materials Science and Engineering,Guizhou Minzu University,Guiyang 550025,China;College of Mechanical and Electrical Engineering,Guizhou Minzu University,Guiyang 550025,China
文献出处：
引用格式：
[1]Qihang Xiong;Weifu Cen;Xingtong Wu;Cong Chen-.Effect of warpage on the electronic structure and optical properties of bilayer germanene)[J].半导体学报（英文版）,2022(12):41-47
A类：
germanene,warpages,manene,extinc
B类：
Effect,electronic,structure,optical,properties,bilayer,under,different,are,studied,by,first,principles,method,density,functional,theory,effects,analyzed,results,study,that,bottom,conduction,band,moves,lower,energy,direction,increase,point,top,valence,stays,constant,gap,decreases,When,changes,from,comes,indirect,semiconductor,This,means,modulate,conversion,between,adjusting,effectively,shows,mainly,distributed,ultraviolet,visible,regions,can,regulate,peak,dielectric,coefficient,largest,corresponding,absorption,edge,smallest,Therefore,utilization,rate,best,when
AB值：
0.29641
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
